I have an Acer TravelMate 506DX (about 5 years old) running XP, and when I tried to start it today the thing just won't boot into windows. Prior to this everything appeared to run ok, no strange behavior.
Normal Mode: Starts with a different memory test (Acer bios screen that normaly doesn't show), then windows starts to load. Goes through the black windows splash screen with the progress bar and then stops at a black screen with the mouse pointer arrow on it.
Safe Mode: Starts with a different memory test, press F2 get the option menu then boots as far as a black Safe Mode screen with the mouse pointer arrow on it.
The hard drive has two partitions C (NTFS) and D (Fat32).
I tried last known Good Configuration but made no difference. I booted with a 98 startup disk and I can't access the previous C drive. The D drive is now showing as the C drive. Entered A:\Fdisk /status and it shows only one partition. So I booted with a Partition Magic floppy and it detects both partitions.